What is zscripting?

Several things. The most common is to use it to make combos behave in special ways, i.e moving, interacting certain ways, etc. Also there are item scripts used for custom items. And I think enemy scripting is coming up. For tutorials and info check out the beta forums.

Thanks

ZScripting is your god, now. Check out the scripting forum or newer quests to see what I mean. If you can suggest it, you can script it.